Pliers



PATENTED MAR. 1, 1904.

W. A. BERNARD.

PLIERS.

AI'PLIGATION FILED AUG. 6, 190a,

no MODEL.

WITNESSES. I

wt i q m UNITED STATES Patented March 1, 1904.

PATENT OFFICE.

WILLIAM A. BERNARD, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO THE WILLIAIVISCHOLLHORN COMPANY, OF NEW HAVEN, CONNECTICUT, A

CORPORATION OF CONNECTICUT.

' 'PLIERS- SPECIFICATION forming part of Letters Patent No. $53,224:,dated March 1, 1904.

Application filed August 6, 1903.

To all whmn it may concern:

Be it known. that I, YVJLLIAM A. BERNARD, of the city and county of NewHaven, State of Connecticut, have invented a new and useful Improvementin Pliers and Similar Tools, of which the following is a full, clear,and exact description, when taken in connection with the accompanyingdrawings, which form a part thereof, and in which- Figure 1 represents aside elevation of pliers embodying my invention, (the jaws being shownopen;) Fig. 2, a similar view broken away somewhat, showing the jawsclosed and in longitudinal vertical section; Fig. 3, an

end view of the pliers as shown in Fig. 1; Fig. 4, a transverse verticalsection on line a 4 of Fig. 2, and Fig. 5 a detail perspective view ofthe vise attachment.

In all figures similar letters of reference 2 represent like parts.

' This invention relates to pliers, and has for its object theproduction of novel means for clamping the jaws of the pliers withoutinterfering with the so-called open throat or 2 5 passage between thejaws, which is useful in gripping long wires or similar articles.

The pliers herein shown are of the type illustrated in a former patentgranted to me May 6, 1890, and numbered 427,220, and con- 3 sists of twohandles A and B, forked at their forward ends to form two sets ofsubstantially parallel plates a and Z2, fulcrumed together at C andhaving jaws D and E connected therewith and to which the movement of thehan- 3 5 dles A and B imparts a parallel motion in opening or closing.The particularconstruction by which this parallel movement isimpartedconsists of pivots a? and 6, connecting the forward ends of the plates0. and b to the 4 jaws and pins a, and b, and slots (1 and e, giving theheels of the jaws a sliding connection within the hollow interior of thehandles; but it is obvious that other suitable means may be employed forthe same purpose. The fulcrum C, as shown more particularly in Figs. 2,3, and 4, is in two parts, pivoting together each set of plates a, andb, so that between the jaws D and E and connecting-plates a and 6 SerialNo. 168,487. (No model.)

- there is formed an opening or passage through which a wire or similararticle may be projected.

F is a slotted U-shaped clamp, one end of which is secured by rivet f orotherwise to the jaw E, as shown, so that the jaw D projects through andmoves within the slot f of the clamp.

G is a set-screw engaging in the head of the clamp F and extending intothe slot f, where it may engage against the upper side of the jaw D, asmore particularly shown in Figs. 2, 3, and 4. The screw G may beprovided with a knurled head 9 for convenience in turning.

H is a spring connecting one of the handles, as A, with the end of oneof the jaws, as D.

By means of the spring H the jaws are normally held in their openposition. Upon the movement of the handles the jaws are closed parallelto each other, as shown in Fig. 2, to grip any article inserted betweenthem. The turning of the set-screw Gr, so that the lower end bears uponthe. upper side of the jaw D when gripping the'desired article, clampsthe jaws in this position against the tension of the spring H.

In order to release the jaws, it is only necessary to unscrew theset-screw Gr, when the spring H will tend to draw the jaws apart.

As the clamp F is shown extending on the outer side of the jaws, anyarticle, such as a long wire, inserted into the passage between the jawsand plates of the handles may pass through the slot f of the clamp, sothat the clamp may be used without detracting from the advantage of theopen-throat feature of the pliers.

Having now described my invention, which may obviouslyvary in itsdetails without departing from the spirit thereof, what I claim, anddesire to secure by Letters Patent, is-

1. In pliers, or similar tools, the combination with cross-levers, oneend of each forming a handle for the tool, and the other end bifurcatedto form parallel plates; of parallel-moving jaws connected to saidlevers within said hifurcations, and forming with said plates an openingor passage within the tool; and a slot to one of said jaws between itsconnections with said cross-levers, and havinga slot in which the otherjaw is adapted to slide; and a screw in said clamp adapted to bear onthe outside of the sliding jaw at a point between its connections withsaid cross-levers, substantially as described.

In witness whereof I have hereunto set my hand this 31st day of July,1903.

WILLIAM A. BERNARD.

Witnesses:

WILLIAM R. PITKIN, SAMUEL H. FISHER.

